db->field_exists('archived', 'lotw_certs')) { $fields = array( 'archived BOOLEAN DEFAULT FALSE', ); $this->dbforge->add_column('lotw_certs', $fields); } } public function down() { if ($this->db->field_exists('archived', 'lotw_certs')) { $this->dbforge->drop_column('lotw_certs', 'archived'); } } }